68540063 has 8 divisors (see below), whose sum is σ = 69700896. Its totient is φ = 67384800.

The previous prime is 68540041. The next prime is 68540081. The reversal of 68540063 is 36004586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68540063 - 2¹² = 68535967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68540083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28745 + ... + 31037.

It is an arithmetic number, because the mean of its divisors is an integer number (8712612).

Almost surely, 2^68540063 is an apocalyptic number.

68540063 is a deficient number, since it is larger than the sum of its proper divisors (1160833).

68540063 is a wasteful number, since it uses less digits than its factorization.

68540063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 68540063 is about 8278.8926191852. The cubic root of 68540063 is about 409.2432262630.

The spelling of 68540063 in words is "sixty-eight million, five hundred forty thousand, sixty-three".